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State Partl. Name

Level Legend: - - - - - - - - - Below Recommended Low Runnable - - - - - - - - High Runnable Above Recommended - - - - - - - - - Unknown Unknown
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River Name/Section Class Level running? Updated
Anacostia, Northwest Branch [MD] US Rte 29 to Riggs Road I-III(V+) 31 cfs
-1 cfs/hr
L5-
Below Recom.
01h01m
Antietam Creek [MD] 1) Upper: Oak Ridge Dr. to Hwy.68 (Devils Backbone Park) I-II 4.13 ft
-0.01 ft/hr
R4-
Runnable
01h31m
Antietam Creek [MD] 2) Hwy 68 to Hwy 34 I-II 4.13 ft
-0.01 ft/hr
R4-
Runnable
01h31m
Antietam Creek [MD] 3) Hwy.34 to Potomac River I-II 4.13 ft
-0.01 ft/hr
R5-
Runnable
01h31m
Bear Creek [MD] U.S. 219 to Youghiogheny River at Friendsville IV 395 cfs
0 cfs/hr
R4-
Runnable
01h16m
Beaver Creek [MD] Beaver Creek Park N Ride (I-70) to Alternate Rt. 40 I(II) 4.13 ft
-0.01 ft/hr
L5-
Below Recom.
01h31m
Bennett Creek [MD] MD Route 355 to Monocacy River I-II 198 cfs
-4 cfs/hr
R3-
Runnable
01h01m
Big Elk Creek [MD] PA Route 341 to Elkton I-II 122 cfs
-4 cfs/hr
L9-
Below Recom.
01h01m
Broad Creek [MD] MD Route 136 to MD Route 623 I-II 320 cfs
-12 cfs/hr
L3-
Below Recom.
00h31m
Cabin John Creek [MD] River Road to Potomac II-III 178 cfs
-2 cfs/hr
L8-
Below Recom.
00h31m
Casselman, N. Branch [MD] Dung Hill Road to Maryland Route 495 I-III 1.58 ft
0.00 ft/hr
L0-
Below Recom.
01h16m
Casselman [MD] MD Route 495 to Salisbury, Pennsylvania I-II 131 cfs
0 cfs/hr
R0-
Lower Runnable
01h16m
Catoctin Creek [MD] US 40 to Potomac River I-II 2.69 ft
+0.01 ft/hr
R4-
Runnable
01h01m
Conococheague Creek [MD] Wilson Bridge (US 40) to Williamsport, MD Boat Ramp I 4.03 ft
0.00 ft/hr
R4-
Runnable
01h01m
Conowingo Creek [MD] Oakwood to Susquehanna River IV-V 542 cfs
-11 cfs/hr
L0-
Below Recom.
01h01m
Crabtree Creek [MD] Swanton, MD to Savage Reservoir III-IV+ 135 cfs
+ 24 cfs/hr
L4-
Below Recom.
00h31m
Deep Creek [MD] Dam to Youghiogheny River V n/a

Deer Creek [MD] 1. Bond Road to MD 23 I 3.10 ft
-0.03 ft/hr
R0-
Lower Runnable
00h31m
Deer Creek [MD] 2. Harford Creamery Rd. to Eden Mill Park boat ramp I 3.10 ft
-0.03 ft/hr
R4-
Runnable
00h31m
Deer Creek [MD] 3. Eden Mill Dam to Rocks State Park I-II(III) 3.10 ft
-0.03 ft/hr
R4-
Runnable
00h31m
Deer Creek [MD] 4. Rocks State Park to US 1, Benjamin Bridge Access I-II(III) 3.10 ft
-0.03 ft/hr
R4-
Runnable
00h31m
Deer Creek [MD] 5. US Rt 1, Benjamin Bridge Access to MD 136 I-II 3.10 ft
-0.03 ft/hr
R4-
Runnable
00h31m
Deer Creek [MD] 6. MD 136 to Susquehanna River I-II 3.10 ft
-0.03 ft/hr
R4-
Runnable
00h31m
Evitts Creek [MD] 1. Lake Gordon Dam (PA) to Maryland Route 144 (MD) I-III 3.53 ft
-0.05 ft/hr
L0-
Below Recom.
01h16m
Evitts Creek [MD] 2. MD 144 to MD 51 I-II 3.53 ft
-0.05 ft/hr
L0-
Below Recom.
01h16m
Fifteen Mile Creek [MD] US Route 40 to Potomac River I-II(III) 2.01 ft
+0.04 ft/hr
L0-
Below Recom.
00h46m
Flintstone Creek [MD] Flintstone Creek Road to Town Creek I-III 266 cfs
-13 cfs/hr
L0-
Below Recom.
01h16m
Georges Creek [MD] Maryland Rte. 36 (Midland) to N. Branch Potomac River III-IV 4.03 ft
0.00 ft/hr
L0-
Below Recom.
01h01m
Gunpowder Falls [MD] 1 - Graves Run Rd to Prettyboy Reservoir (Gunpowder Road) II+ 53 cfs
0 cfs/hr
R0-
Lower Runnable
01h16m
Gunpowder Falls [MD] 2 - Prettyboy Dam to Falls Road I-III 357 cfs
-13 cfs/hr
R6-
Runnable
00h46m
Gunpowder Falls [MD] 3 - Masemore Road to Monkton Road I-II 508 cfs
-20 cfs/hr
R5-
Runnable
00h33m
Gunpowder Falls [MD] 4. Monkton Road to Phoenix I 659 cfs
-10 cfs/hr
R4-
Runnable
00h31m
Gunpowder Falls [MD] 5 - Lower Loch Raven Dam to Route 1 I-II ~ 876 cfs
-69 cfs/hr
R5-
Runnable
00h33m
Gunpowder Falls [MD] 6 - Route 1 to U.S.40 II-III ~ 883 cfs
-67 cfs/hr
R5-
Runnable
00h33m
Gwynns Falls [MD] 1) Villa Nova to Woodlawn II 68 cfs
-4 cfs/hr
L7-
Below Recom.
01h16m
Gwynns Falls [MD] 2) Gwynn Oak Ave. to Wilkens Ave (US 1) II-III(IV) 68 cfs
-4 cfs/hr
L7-
Below Recom.
01h16m
Herring Run [MD] Echodale Ave to US 40 II-III 2 cfs
0 cfs/hr
L9-
Below Recom.
00h27m
Hunting Creek [MD] Catoctin Hollow Road to Frank Bentz Lake III-IV+(V) 279 cfs
+ 4 cfs/hr
L8-
Below Recom.
01h01m
Jennings Run [MD] Barrelville to Wills Creek III+ 146 cfs
+ 10 cfs/hr
L7-
Below Recom.
01h31m
Jones Falls [MD] Lake Roland to Round Falls I-III n/a

Laurel Run [MD] Laurel Run IV 3.97 ft
-0.01 ft/hr
L2-
Below Recom.
00h31m
Little Falls of the Gunpowder [MD] Parkton (Maryland Route 45) to Gunpowder Falls I-III 177 cfs
-3 cfs/hr
L9-
Below Recom.
00h31m
Little Gunpowder Falls [MD] 1) Bottom Rd @ Laurel Brook to Jerusalem Mill (Jerusalem Rd.... I-II 111 cfs
-3 cfs/hr
L0-
Below Recom.
00h31m
Little Gunpowder Falls [MD] 2) Jerusalem Mill (Jerusalem Rd.) to U.S. Route 40 II-III 111 cfs
-3 cfs/hr
R0-
Lower Runnable
00h31m
Little Patuxent [MD] US Route 29 (Columbia) to US Route 1 I-IV 265 cfs
-6 cfs/hr
R0-
Lower Runnable
00h31m
Little Seneca Creek [MD] Boyds to Darnestown II(III) 382 cfs
0 cfs/hr
L4-
Below Recom.
00h55m
Long Green Creek [MD] Glen Arm Rd. to Gunpowder Falls IV 23 cfs
0 cfs/hr
L0-
Below Recom.
00h31m
Middle Creek (Catoctin Creek trib.) [MD] Wolfsville to Myersville II-III(V) 2.69 ft
+0.01 ft/hr
L6-
Below Recom.
01h01m
Middle Creek (Toms Creek trib.) [MD] T318 to Harney Road II+ 446 cfs
+ 16 cfs/hr
L5-
Below Recom.
00h31m
Middle Patuxent [MD] Carroll Mill Road to Savage Mill I-II(IV) 4.42 ft
-0.02 ft/hr
L6-
Below Recom.
00h31m
Mill Run [MD] Pigs Ear Road to Yough River Lake III-IV+ 94 cfs
+ 2 cfs/hr
L3-
Below Recom.
00h31m
Monocacy River [MD] 1. Creagerstown Park to Devilbiss Bridge Park I 5.80 ft
-0.14 ft/hr
R8-
Upper Runnable
01h16m
Monocacy River [MD] 2. Devilbiss Bridge Park to Riverbend Park I 5.80 ft
-0.14 ft/hr
R8-
Upper Runnable
01h16m
Monocacy River [MD] 3. Pinecliff Park to Buckeystown Park I(II) 5.80 ft
-0.14 ft/hr
R8-
Upper Runnable
01h16m
Monocacy River [MD] 4. Buckeystown Park to Park Mills Road I(II) 5.80 ft
-0.14 ft/hr
R8-
Upper Runnable
01h16m
Muddy Creek [MD] Cranesville Swamp Nature Preserve (Lake Ford Road) to Youghi... I-III(V) 94 cfs
+ 2 cfs/hr
L8-
Below Recom.
00h31m
Northeast Creek [MD] below covered bridge on Route 272 V 122 cfs
-4 cfs/hr
L8-
Below Recom.
01h01m
Octoraro Creek [MD] New Bridge Road to Richardsmere II 542 cfs
-11 cfs/hr
R4-
Runnable
01h01m
Olmsted Island Creek [MD] Clara Barton Parkway to C&O Canal V n/a

Owens Creek [MD] 1) Lantz to Roddy Covered Bridge II-IV 279 cfs
+ 4 cfs/hr
L8-
Below Recom.
01h01m
Owens Creek [MD] 2) Rocky Ridge Road (Hwy.77) to Monocacy River I-II 279 cfs
+ 4 cfs/hr
R0-
Lower Runnable
01h01m
Patapsco, S. Branch [MD] 1. Woodbine to Henryton Rd. II+(III) 288 cfs
0 cfs/hr
R0-
Lower Runnable
00h48m
Patapsco, S. Branch [MD] 2. Marriottsville Rd to Patapsco, N. Branch confluence I-III(IV) 659 cfs
-34 cfs/hr
R4-
Runnable
00h33m
Patapsco [MD] 1. N. Br./S. Br. confluence to Daniels river access I 861 cfs
-26 cfs/hr
R5-
Runnable
00h33m
Patapsco [MD] 2. Daniels river access (below Dam) to Elkridge I-III 1030 cfs
-20 cfs/hr
R5-
Runnable
00h31m
Piney Run [MD] Arrington Road to Marriottsville I-III(IV) 42 cfs
-2 cfs/hr
L7-
Below Recom.
00h46m
Potomac, North Branch [MD] 1. Henry, WV to Gormania, WV I-III 3.97 ft
-0.01 ft/hr
L4-
Below Recom.
00h31m
Potomac, North Branch [MD] 2. Gormania, WV to Kitzmiller, MD III-IV 3.97 ft
-0.01 ft/hr
R2-
Lower Runnable
00h31m
Potomac, North Branch [MD] 3. Kitzmiller, MD to Jennings Randolph Lake II-III 3.97 ft
-0.01 ft/hr
R3-
Runnable
00h31m
Potomac, North Branch [MD] 4. Barnum, WV to Bloomington, MD II(III) 1240 cfs
0 cfs/hr
R5-
Runnable
00h31m
Potomac, North Branch [MD] 5. Bloomington, MD to Keyser, WV I-II 1630 cfs
+ 10 cfs/hr
R5-
Runnable
00h46m
Potomac, North Branch [MD] 6. Black Oak River Access Nr. McCoole, MD to Pinto, MD I 1630 cfs
+ 10 cfs/hr
R5-
Runnable
00h46m
Potomac, North Branch [MD] 7. Pinto, MD to Upper Potomac Industrial Park (upstream of C... I 1630 cfs
+ 10 cfs/hr
R5-
Runnable
00h46m
Potomac, North Branch [MD] 8. Wiley's Ford, WV to Oldtown Toll Bridge I 2378 cfs
+ 9 cfs/hr
R6-
Runnable
00h48m
Potomac [MD] 0.1 Oldtown Toll Bridge to Paw Paw Tunnel Campground I 12.72 ft
-0.16 ft/hr
H9-
Above Recom.
00h31m
Potomac [MD] 0.2 Paw Paw Tunnel Campground to Fifteen Mile Creek Boat Lan... I 12.72 ft
-0.16 ft/hr
H9-
Above Recom.
00h31m
Potomac [MD] 0.3 Fifteen Mile Creek Boat Ramp to Hancock, MD I 11.74 ft
-0.14 ft/hr
H9-
Above Recom.
00h31m
Potomac [MD] 0.4 Big Pool Campground to Williamsport MD I 11.74 ft
-0.14 ft/hr
H9-
Above Recom.
00h31m
Potomac [MD] 0.5 Dam # 4 to Shepherdstown WV I 11.74 ft
-0.14 ft/hr
H9-
Above Recom.
00h31m
Potomac [MD] 0.6 Shepherdstown, WV to Dargans Bend Boat Ramp I 11.74 ft
-0.14 ft/hr
H9-
Above Recom.
00h31m
Potomac [MD] 0.7 - Harpers Ferry - Dargans Bend Boat Ramp to Sandy Hook/P... II+ 10.93 ft
+0.01 ft/hr
H9-
Above Recom.
01h35m
Potomac [MD] 0.8 Sandy Hook/Potoma Wayside to Point of Rocks MD I-II 10.93 ft
+0.01 ft/hr
H9-
Above Recom.
01h35m
Potomac [MD] 0.9 Point of Rocks to Mouth of Monocacy I 6.65 ft
+0.05 ft/hr
R8-
Upper Runnable
01h01m
Potomac [MD] 1. Mouth of Monocacy to Riley's Lock Boat Ramp I 6.65 ft
+0.05 ft/hr
R8-
Upper Runnable
01h01m
Potomac [MD] 2. Violette's Lock to Pennyfield Lock I-II 6.65 ft
+0.05 ft/hr
R8-
Upper Runnable
01h01m
Potomac [MD] 3. Great Falls (Center Lines) V+ 6.65 ft
+0.05 ft/hr
H9-
Above Recom.
01h01m
Potomac [MD] 3. Great Falls (Fish Ladder) IV-V(V+) 6.65 ft
+0.05 ft/hr
H9-
Above Recom.
01h01m
Potomac [MD] 3. Great Falls (MD Lines) V+ 6.65 ft
+0.05 ft/hr
H6-
Above Recom.
01h01m
Potomac [MD] 3. Great Falls (VA Lines) V 6.65 ft
+0.05 ft/hr
H9-
Above Recom.
01h01m
Potomac [MD] 3. Through Great Falls (several runs) V+ 6.65 ft
+0.05 ft/hr
H9-
Above Recom.
01h01m
Potomac [MD] 4. Sandy Beach/O-Deck to Anglers Inn II-III(IV) 6.65 ft
+0.05 ft/hr
H2-
Above Recom.
01h01m
Potomac [MD] 5. Anglers Inn to Lock 10 II 6.65 ft
+0.05 ft/hr
R9-
Upper Runnable
01h01m
Potomac [MD] 6. Lock 10 to Sycamore Island I 6.65 ft
+0.05 ft/hr
R9-
Upper Runnable
01h01m
Potomac [MD] 7. Little Falls II-III(IV) 6.65 ft
+0.05 ft/hr
H2-
Above Recom.
01h01m
Rock Creek [MD] 1. Rockville to Beach Dr. Near DC/MD line. I(II) 178 cfs
-2 cfs/hr
R0-
Lower Runnable
00h31m
Rock Creek [MD] 2. Beach Dr. below East-West Hwy to Potomac River in D.C. I-III 178 cfs
-2 cfs/hr
L8-
Below Recom.
00h31m
Savage [MD] 1. Avilton Lonaconing Road to Head of Savage Reservoir II(IV) 135 cfs
+ 24 cfs/hr
L0-
Below Recom.
00h31m
Savage [MD] 2. Savage Dam to North Branch Potomac River III-IV 371 cfs
0 cfs/hr
L7-
Below Recom.
00h31m
Seneca Creek [MD] Black Rock Mill to Riley's Lock Boat Ramp I-II 382 cfs
0 cfs/hr
R8-
Upper Runnable
00h55m
Sideling Hill Creek [MD] Purcell Penn.(sr 2011)to the Potomac river I-II 2.01 ft
+0.04 ft/hr
R3-
Runnable
00h46m
Town Creek [MD] 1. Chaneysville to I-68 (Maryland) I-II 3.53 ft
-0.05 ft/hr
R0-
Lower Runnable
01h16m
Town Creek [MD] 2. I-68 to Potomac River I 266 cfs
-13 cfs/hr
R4-
Runnable
01h16m
Wills Creek [MD] Ellerslie to Eckhart Junction I-II 146 cfs
+ 10 cfs/hr
L0-
Below Recom.
01h31m
Winters Run [MD] Pleasantville Road to Maryland Route 7 I-II 103 cfs
-2 cfs/hr
L0-
Below Recom.
00h31m
Youghiogheny [MD] 0. US Route 50 to Millers Run I-II 94 cfs
+ 2 cfs/hr
R0-
Lower Runnable
00h31m
Youghiogheny [MD] 1. Tippy-Top IV 824 cfs
0 cfs/hr
R7-
Upper Runnable
00h31m
Youghiogheny [MD] 2. Top IV-V 824 cfs
0 cfs/hr
R7-
Upper Runnable
00h31m
Youghiogheny [MD] 3. Upper IV-V 4.31 ft
-0.02 ft/hr
H5-
Above Recom.
01h01m
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